Thyroid gland
Other carcinoma
WDT-UMP / Well differentiated neoplasm of uncertain malignant potential

Author: Shuanzeng Wei, M.D., Ph.D. (see Authors page)
Editor: Andrey Bychkov, M.D., Ph.D.

Revised: 17 February 2017, last major update January 2017

Copyright: (c) 2003-2017, PathologyOutlines.com, Inc.

PubMed Search: well differentiated neoplasm of uncertain malignant potential OR WDT-UMP

Cite this page: WDT-UMP / Well differentiated neoplasm of uncertain malignant potential. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/thyroidwelldiffump.html. Accessed March 27th, 2017.
Definition / General
Essential Features
  • Follicular neoplasm with equivocal nuclear features of papillary thyroid carcinoma and questionable capsular or vascular invasion
Prognostic Factors
  • Excellent prognosis with lobectomy
Gross Description
  • Well circumscribed or encapsulated solid nodule
Micro Description
  • Well circumscribed or encapsulated follicular neoplasm with equivocal nuclear features of papillary thyroid carcinoma and questionable capsular or vascular invasion
Micro Images

Images hosted on PathOut server:

Missing Image

Contributed by Shuanzeng Wei, M.D., Ph.D.



Images hosted on other servers:

Missing Image

Schematic drawing for capsular invasion (left) and vascular invasion (right)

Missing Image

Equivocal nuclear
features of papillary
thyroid carcinoma

Cytology Description
Cytology Images

Images hosted on other servers:

Cytological features of WDT-UMP

Positive Stains
Differential Diagnosis